Trip circuits & lockout relays

Original part-level recording form with preparation guidance and related tools.

Prepare the equipment record

Identify installed components, the exact OEM manual and approved work scope. These are original preparation notes, not a test specification or complete procedure.

Maintenance evidence: Reference prior comparable records, events, service changes and unresolved discrepancies. Routine observation and outage work have different access and evidence needs.

Component context & relevant tool types

Research links for tasks already included in your approved plan; not a required test list or model recommendation. Verify technology, access, interfaces and accessories. OEM/specialist guidance governs unsupported tasks.

Trip & close circuits: Trip coil current recorder
Relay hardware: Secondary injection test set · IEC 61850 test interface
Logic & settings: Identify the OEM document and approved recording scope; no generic test tool is prescribed.
DC circuits: Digital multimeter
Power connections: Micro ohmmeter · Torque wrench
Enclosure & structure: Identify the OEM document and approved recording scope; no generic test tool is prescribed.

Browse tool types for this equipment What OK means & measurement context Unexpected trip / alarm — evidence to bring

Technical review pending. Verify installed parts, work scope and applicable OEM instructions. No manufacturer-specific approval is claimed.